You are a part of immune system - the Neutrophil. Your mission is to fight an illness and cure the organism. On the way to the center you will find a variety of the viruses, which you have to overcome.

-Your human will try to help you by taking the pills. But he's not a doctor ;)
-You'll see how are look like the most common viruses on the planet
-Don't be afraid to die because there are still more than 1 billion neutrophils. And they are ready to come at any time